Loader.



V. G-HALBY.

V LOADER.

APPLICATION FILED APR.26, 1915 H SHE'ETS-SHEET I.

WI TN SE5 IN VEN TOR.

Jmddw By n y Z C E 7 ATTORNEYST V. G. HALBY.

LOADER.

APPLICATION FILED APR.26. I915.

SHEET 2.

INVENTOR. fi gfl r ATTORNEYS.

m v n0 m w W 0, m Z 8 WW 9W W/W I J V. G. HALBY.

LOADER.

APPLlCATiON FILED APR. 26' 1915 1 gg lggg Patented Nov. 12, 1918.

' v 1] SHEETS-SHEET 3.

5 b E k INVENTOR WITNESSES:

2 0- w QM y if A TTORNE YS.

V. G. HALBY LOADER.

APPLICATION FILED APR. 26. 1915.

Patented Nov. 12, 1918.

H SHEETS-SHEET 4.

y IN VEN TOR. 7 7

ZTORNEYS.

V G. HALBY.

LOADER.

APPLICATION FILED APR.26.1915.

1 28fi59 c Patented Nov. 12, 1918.

- 11 SHEETS-SHEET 5.

WITNESSES: IN VENTOR.

V. G. HALBY.

LOADER.

APPLICATION HLED APR.26-1915.

l 28% 659 a Y Patented Nov. 12, 1918.

11 SHEETS-SHEET 7.

' INVENTOR W1 TNESSES: I C/MGM By if f' g y, Y A? 67 mf wudzhu 7 9 Z/ W ATTORNEYS.

v. e. HAL BY.

LOADER.

APPLICATION F.'LLD APR.26. 1915.

Pafcntvd Nov. 12, 11118.

1ISHEETS-SHEET 8.

ATTORNEYS.

WITNESSES:

V. G. HALBY.

LOADER.

APPLICATION FILED APR.26, 1915. 1,284,659 Patented Nov. 12, 1918.

I n SHEETS-SHEET 9.

INVENTOR.

WITNESSES ATTORNEYS.

V. G. HALBY.

LOADER.

APPLICATION FILED APR-26.1915.

Patented Nov. 12, 1918.

LZQLGSQD 11 SHEETS-SHEET i0.

INVENTOR. W' j; M 7 M4 ATTORNEYS.

WITNESSES c/fl, G M

WITNESSES V. G. HALBY.

LOADER.

APPLICATION FILED APR.26,1915.

Patented Nov. 12, 1918.

1 I SHEETS-SHEET II.

IN VEN TOR. I Wf N 2%04 T W A TTORNE YS.

UNITE SATES j ENT OFFICE.

VIGGO G. HALBY, 0F MARQUEE-TE, MICHIQAN, ASSIGNOR T0 EUREKA MUCKING &

ENGINEERING MICHIGAN.

COMPANY, CRYSTAL FALLS, MICHIGAN, A CORPORATION OF LOADER.

Specification of Letters Patent.

Patented Nov. 12, 1918.

To all whom it may concern:

Be it known that I, VIGoo G. HALBY, a citizen of the United States, residing at Marquette, in the county of Marquette and State of Michigan, have invented a new and useful Improvement in Loaders, of which the following is a specification.

This invention relates to machines for loading various materials, such as ore, coal, ear'th, sand, gravel, or the like.

The primary object of the invention is to provide a machine of simple, compact and durable construction, which can be operated with facility, and which is capable of expeditiously handling large quantities of materials.

The accompanying drawings illustrate the invention, in its preferred embodiment, as adapted to operate in mine workings, tunnels, and in analogous situations Where the room is limited. While the machine is particularly well adapted for use Where the head room is low, it may be advantageously used in open places for the loading of loose ore, earth, sand, gravel, and like materials; and also for excavating and loading loose earth, sand, gravel, and other easily loosened materials.

In the drawings I Figure 1 represents a longitudinal sectional view of a loader embodying the invention; Fig. 2, a side elevational View of the same, one part being shown brokenly; Fig. 3, a plan view of the same; Fig. 4, a broken plan view of the'front end of the conveyei: and the power-actuated shovel mounted thereon; Fig. 4, a broken vertical longitudinal section taken as indicated at line t of Fig. 4, the loading position of the shovel being shown in full lines and the discharge position of the shovel being shown in dotted lines; Fig. 5, a plan sectional view taken approximately as indicated at line 5 of Fig. 2; Fig. 6, a broken side elevational view showing one of the trunnions connecting the conveyer mechanism with the intermediate frame or car-body of the machine; Fig. 6 a broken plan view of the same portion of the mechanism; Fig. 7, a detail view of the mechanism for raising and lowering the boom on which the endless conveyor and shovel, mechanism are mounted; Fig. 7 a section taken as indicated at iine T of Fig.

7; Fig. 8, an enlarged vertical sectional view taken as indicated at line 8 of Fig. 5; Fig. 9, a transverse vertical section taken as indicated at line 9 of Fig. 5; Fig. 10, a sectional view similar to Fig. 4*, but with some of the parts omitted; Fig. 11, a view at the front end of the conveyor, showing the mountingfor the shovel; Fig. 11 a plan View of the same; Fig. 12, a transverse vertical section taken as indicated at line 1:2 of Fig. 4"; Fig. 13, a transverse vertical section taken approximately as indicated at line 13 of Fig. 2; Fig. 14, a broken plan view, partly diagrammatic, depicting a pair of deflectors employed at the discharge end of the conveyer, and illustrating the manner of operating the same; and Fig. 15, a rear end view of said deflectors.

In the preferred embodiment, which is that illustrated, A represents a poweractuated truck which is mounted on a track A and which is at all times within the control of the operator; B, an intermediate frame or car-body Whose rear portion has swivel connection with the rear portion of the truck A. as indicated at 1, and the front end of which may be swung laterally in either direction on a curved track 1*, with which the front end of the truck is provided, by mechanism within the control of the operator; C, conveyor mechanism connected, by trunnions 2, t0 the rear upper portion of the intermediate frame B, said conveyor mechanism being connected with conveye'r tilting mechanism mounted on the front portion of the car-body B; D, a shovelmounted on the front end of the cohveyer mechanism and carried and actuated by shovel-actuating mechanism D mounted on the front portion of the conveyor mechanism; and E, an oscillating chute or distributer which receives the materials from the rearwardly-dumping shovel and distributes the same 'on the conveyor-belt.

The truck-frame A and superposed body B are of comparatively short length; and the body B is surmounted by the conveyor mechanism which has a forwardly and downwardly inclined front portion which projects in front of the truck, and a sub stantially horizontal rear portion which overhangs or projects in the rear of the truck. in practice. an ore-car, or other burinsects As has been indicated, the clutches 21 and 22 control the propelling mechanism of the machine, that is, the traction mechanism. The clutches 21 and 22 are, in turn, controlled by yokes 63 and 6% carried by longitudinal rock-shafts 65 and 66, which have their rear ends equipped with bevel-gears which engage bevel-gears 67 secured on a transverse rock-shaft 68 which is actuated by an arm 69 joined by a connecting rod 70 to the lever 71.

From the foregoing, it will be understood that the machine is propelled or driven on the track A by propelling mechanism controlled by the lever 71'; that the lateral swing of the intermediate frame or carbody on the truck is controlled by the lever 39%; and that the raising and lowering of 4 the boom is controlled by the lever 40"*these several levers being conveniently mounted with relation to the platform 72 upon which the operator stands.

The clutch 43 may be thrown to clutch the sprocket-wheel 4. to the shaft 4, so that the conveyer driving chain 5 will be continuously operated. Any suitable means as a hand-lever 148, may be employed for operating the clutch 4.

The front portion of the frame of the conveyer mechanismC affords a boom, on the front part of which the shovel mechanism is mounted. The boom frame comprises the inclined longitudinal front sidemembers 73 which are provided at their rear ends with the tubular trunnions 2 which are received in substantial bearings 74 with which the rear upper portion of the intermediate frame or body B is provided; and rear side-members 7 5 which are pivoted on inward extensions of the trunnions 2. As will be understood from Figs. 6 and 6, the rear portion of the conveyer-frame is adapted to counterbalance, to a large extent, the front portion of the conveyer-frame, or boom. Articulate connections are employed between the frame-members 73 and 7 5, however; and the construction is such that the counter-balancing effect will be secured until the front end of the boom is raised a certain distance, when the rear frame-member 75 will rest upon shoulders 76 with which the intermediate frame B is provided in the rear of the trunnions 2. The members.75, whose front ends are journaled concentrically with the trunnions 2, are equipped with adjustable stops or setscrews 77 which bear upon shoulders or knuckles 78, with which the members 7 3 are equipped in the rear of the trunnion connections. Thus, the frame-members 75 will be supported normally, through the medium of the set-screws 77, on the shoulders or short arms of the frame-members 73; but should the front ends of the frame-members 73 be unduly raised, the members 7 5 would rest upon the shoulders 76, when the rear end of theconveyer is in substantially a horizontal position.

Journaled in the trunnions 2 and concentric therewith is a conveyer-actuating shaft .79 equipped with a sprocket-wheel 80,

which is actuated by the sprocket-chain 5. Power is transmitted from the shaft 79, through gears 81 and 82, to a shaft 83 disposed in the rear of the shaft 79 and journaled in the frame-members 75. From the shaft 83 power is transmitted through bevelgears to an extensible longitudinal shaft 84:, the rear end of which is connected by bevel-gears with a transverse shaft 85 which carries the drums 86, upon which the rear end of the endless conveyer 87 is mounted.

The endless conveyer passes over and about suitable idlers, and has its front end mounted on a drum 88 carried by a shaft 89 journaled in short standards carried by a cross-member 90 (Fig. 12) which is secured to the front ends of the side-members 73 of the boom-frame.

The shovel D is carried by the shovel-actuatin machanism D mounted on the front portion of the boom-frame. The shovel-actuating mechanism comprises a pair of large gears 91 supported on the frame-members 7 3 of the boom and actuated by pinions mountedon a shaft 92 which is actuated from the shaft 79 by a sprocket-chain 93; a crank shaft 94: journaled in the front ends of the members 73 of the boom-frame and actuated by pitman-rods 95 whose front ends are connected with crank disks or crankarms 96 which are secured to rotate with thegear-wheels 91, the gear-wheels 91 and.

the crank-disks 96 being secured on opposite ends of shafts journaled in bearings 97 with which the fran'ie-members 73 are provided; and connecting-rods 98 whose rear ends are connected with wrist-pins 99 carried by the gear-wheels 91.

The shovel D is carried by a mounting which is suspended from the continuouslyrotating crank-shaft 94, the arrangement being such that the discharge-end of the shovel will be carried by the crank, which acts as an orbitally-moving pivot; and the connecting rods 98 serve. to impart a forward thrust to the point portion of the shovel during the filling operation and also to turn the shovel about its orbitallyaauvingpivot and cause it to assume the rearwardly-dumping position shown by dotted lines in Fig. 4*.

It will be understood from Figs. 10 and 11, the crank-shaft has the journal-portimis 100 mounted in bearings 1Q1 (Fig. 3) of the frame-member 73; the outer crank arms 102 with which the pitmen 5 are connected: and the offset main portion or shovel-carrying pivot 103 from which the shovel is suspended at its discharge end. The shovel llllil is carried by a transversely-(1isposed rectangular frame 104. to the end portions of which are secured triangular arms 105, the construction being such as to afford substantially vertical slots 100. through which the shovel pivot 103 of the crank-shaft eX- tends. Thus, the frame 101 is capable of limited vertical movement with relation to the crank-shaft from which it is suspended The frame 101 is provided at its upper portion with forwardly-e);tending lugs which support a pivot or pivots 108, from which are suspended links 109, whose lower ends support a bar or shaft 110.

The shovel comprises a bacleportion 111 and forvvaidly-turned point-portion 112 and sides 1153. At an intermediate portion of the shoveh some distance back of the point, the shovel-back is provided with lugs or cars 111 which are secured on the shaft or bar 110. its indicateth the end-portions of the bar 110 are niaiile, ronnd where they extend through the lower portions of the links and the eXtreniities of the. shaft are extended a suitable distance and connected with links 115, whose rear ends are connected. by pivots 11th with ears 11'? carried hp the front ends of the connecting-rods 98 the front ends of the connecting-rods 9 being also connectmh by substantial pivots 1 8 to the rear ends of the triangular arnis 105. The rear edges of the shovel suspension links 100 bear against the front side of the. frame 101 when the operation of filling: the shovel begins. and the main thrust is transmitted. at such time through the triangular arins 105 to the main pivots 118 at the front ends of the connecting-rods 98. During the tilling operation, the orhitally-inoving shoveh pivot 103 traverses the lower arc of its orbit in a for 'ard direction, and the shovelinounting 101 is ,e'raduallr turned about the orbitally-inoving pivot. After the shovel is practically filled, the thrust lin {S come into action, causing the suspension links 109 to swing forwaidlv and upwardly about the pivot 108, the links 109 being swung farther and farther from the frame 1041., so that the shovel will assume the discharging position indicated by dotted lines in Fig. 4., notwithstandinn the fact that the main frame of the shovel-mounting is turned through a smaller are. 7

The upper ends of the shovel-suspension links 100 are provided with slots 119, which engage the pivot 108 and the front ends of the thrust-links 115 are provided with slots which engage the extremities of the shaft 110. The shovel is capable of limited turning; inoven'ient about the pivot-shaft 110., the upper or discharge end of the shovel being connected. bv chains 121 to the frame 10 1.

Front the description given it will he understood that the main shovel-mounting esa see is capable of limited movement with relation to the orbitally-moving pivot 103, and that the shovel is also capable of limited movement with relation to its mounting, because of the lost motion connections employed. This enables the shovel to adjust itself to conditions in the shoveling operation.

1t will be noted that the main gear-wheels 01 through which power is communicated to the shovel, are iDOllIltQtl adjacent the inner sides of the flt1111111111l)6373 73 of the more; that the crank-disks 96 are at the outer sides of said frame-members; that the pitnien 95 which operate to continuously turn the crank shaft are disposed at the outer sides of the frame-members 1'3; and that the connection-rods 98 which serve to thrust the point of the shorel into the materials, operate between the arms of the crank-shaft which carrv the orhitally-nior' pivot .103 and. in the spa ee between the fran members which siniport e end convcyer and the frame-ineini will he antlers ood front 1 LL 1 netted lines,

(l.l50l19.1l 8(1 upon the lower conveyor. o insure the on the cor rcci orocat l. in ted ines in 1 1; will he rear of its stroke and in position permit the materials to be discharged into said member 111. the nien'iher it moves forwardly and upwardly. the materials are distributed upon the"eonveyer-helt. 1 will he understood that the oosition of the member illus trated corresponds with he fullline position of the shovel said figure. The member E (301 ises sides and an end 12 1n other words, the member E is a. tl-shaped nieinben open at the top and botloin, so that the materials may pass there through and lodge upon the conveyor-belt. The sides of the member E are provided with la-form rails 1253, which slide on rollers 1'21 mounted on stub-shafts fastened to sheet-metal side-pieces which are rigid with or form a part of the boom-frame. The member ll reciprocated in the direction of the length of the hoonn by means of arms 12? which depend from a roclt shaft 128, the lower ends of the arms 127 being connected, by links 120.. with the sides of the member 1* The rock-shaft 128 is oscillated through the medium of an 130 which is connected in; a link 131 to one of the pitliltllhlOdS The sheet aasaeee materials discharged from the shovel from falling over the sides of the conveyer, and these sheet metal members 126 are extended, with .reduced height, as indicated at 126*, up to the vicinity of the trunnions of the boom-frame.

The shaft 85, which carries the drum about which the upper end of the endless conveyer passes, is mounted in adjustable bearings 132 carried by the rear framemembers of the conveyer-frame, the bearings132 being adjusted by means of adj usting-devices 133. This enables the proper tension to be given to the conveyer-belt, and it will be understood that the extensible shaft 81, through which motion is communicated to the shaft 85, has its length automatically adjusted in accordance with the adjustment of the bearings 132. Corresponding with the sheet metal side-pieces 126, the rear portion of the conveyer-frame is equipped with sheet metal side-pieces 131, which project upwardly from the edges of the conveyer-belt. The upper or operating portion of the conveyer-belt is preferably so supported on idlers as to curve the belt in.

cross-section, in the manner illustrated in Fig. 13, thus tending to keep the materials on the belt.

As will be understood from Figs. 2,11 and 15, the rear end of the conveyer-frame is preferably equipped with a pair of guidemembers or chute-members 135, which are automatically swung upon longitudinal, substantially horizontal axes, so that the lower ends of the members ordeflectors 135 will point in the opposite direction from the direction in which the rear end of the conveyer swings when the intermediate frame or carbody B has its front end swung laterally to direct the shovel to one side or the other of the track. The purpose of the deflectors 135 is to direct the materials discharged from the rear end of the conveyer-belt toward the center of the car which is being filled, regardless of the lateral swing of the rear end of the conveyer. Each member 135=is fixedly secured to a shaft 136 mounted in bearings 137 with which the rear members 75 of the conveyer-frame are equipped. The front ends of the shafts 136 are fitted with arms or segments 138, by means of which the shafts may be turned. A rope or flexible connection 139 passes about the drum or sleeve 42*, which forms a part (f the mechanism for swinging the intermediate frame B laterally; and the ends of this rope, after passing about suitable guide-rollers 14.0, are connected with the arms or segments 138. The arrangement is such that when the drum 42* is turned in such direction as to swing the rear end of the conveyer mechanism to one side of the track, the deflectors 135 will be given such inclination as to cause their lower ends to point in the direction opposite that in which the rear end of the conveyer has been swung. When the conveyer is swung in the opposite direction, the deflector-members 135 are given an opposite inclination. The result is to direct the materials to the center of a burden-car (none shown) which may be located on the track A beneath'the disehargespout or deflectors 135. These members are connected at their loweredges by a link 135 so that the deflectors are compelled to move together.

The operation may be described briefly. The operator stands on the platform 72, within convenient reach of the controlling levers of the machine. After starting the motor 3, the clutch 4 is operated to connect the sprocket-wheel 4P with the continuously rotating shaft 4. The clutch 1 may be shifted by the ab0ve-mentioned lever 118. Power is communicated through the sprocketchain 5 and imparts continuous motion to the endless conveyer and the shovel-actuating mechanism, it being noted that power is transmitted through the sprocket-chain 93 and shaft 92, so that the main gear-wheels 91 will be continuously rotated, thus imparting, through the pitman-rods 95, continuous rotation to the crank-shaft upon which the shovel is suspended, and imparting, through the connecting-rods 98, the power for forcing the point portion of the shovel into the materials and causing the shovel to' turn about the orbitally-nioving pivot on which it is suspended, so that the shovel will, after being filled, be inverted, to discharge the contents through the reciprocating-member E on the front end of the conveyer-belt. In the filling operation, the shovel moves for wardly with relation to the boom-frame, it being noted that the orbitally-moving pivot is at such time moving forwardly, and that the connecting-rods 98 are] imparting a forward thrust to the point portion of the shovel, the thrustbeing transmitted through the triangular arms 105 and frame-101- to the shovel, the suspension links 109, at this time, resting against the front side of the frame 104. In the first part of the filling operation, the shovel naturally tilts about the pivot-shaft 110, the chain-links 121 limiting the movement of the discharge end of the shovel away from the orbitally-moving pivot 103.

During the filling operation, the shdvel gradually approaches a horizontal position, with the point turning upwardly; and after the frame-member 104 has been turned on the orbitally-moying pivot 103 a limited distance, the links 115 come into play and cause the lower ends of the suspension links 109 to move away from the frame 104, so that the shovel will be eventually given the completely inverted position indicated by dotted lines in Fig. 1. When the shovel attains such a position that the discharge end overbalances the front end, the discharge end of the shovel falls back against the frame 104: with a jarring action, thereby causing the materials in the shovel to be loosened, so that they will fall into the member E and upon the conveyer-belt. This feature of a lost-motion connection between the shovel and its mounting is of particular importance in mucking operations, where the material is often of such nature as to tend to adhere to the shovel.

The operator controls the traction mechanism in such manner as to cause the machine to move forward at the moment that the shovel enters the materials so that the momentum of the machine is added to the thrust imparted to the shovel by the shovelactuating mechanism. Thus the machine is periodically retracted and advanced, this action being timed to correspond with the action of the shovel, so that the whole ma.- chine is given a chugging; action which greatly aids in the operation of filling: the shovel. The propelling mechanism of the machine is controlled by the lev r 71 which controls the clutches :21 and in the manner hcrcinbelorc described. The operator controls the lateral swing of the intermediate frame or bocy B by means of the lever 3%, which controls the clutches and 8" which regulate the direction of rotation of the worm-wheel a2 and the consequent dircction of rotation of the vertical shaft whose pinion 4C5 meshes with the rack 46. By this mechanism, the boom is swung laterally in either dir action to enable the shovel to follow and gather the materials. The raising and lowering, of the front end of the boom is controlled by the lever which controls the clutches and 51, which regulate the direction of rotation of the wornnwheel it having been explained that power is communicated from the wormwheel to the pinion-equipped shaft 56 which operates the racks 58. The racks 58 are struck on a radius from the axis 79 about which the boom swings and the rack 46, which forms a part of the mechanism for swinging the intermediate frame B laterally, is struck on a radius from the axis of the swivel 1, which is also true of the segmental track 1 The front end of the intermediate frame B is equipped with rollers 147. which travel on the track 1, as illustrated in Fig. 5.

The weight of the front portion of the conveyor mechanism is transmitted through the racks 58 and pinions 57 to the shaft 56; and from the shaft 56 through the ratchettceth 60 and pawl 61 to the worm-Wheel 55, which is operated and held by the worm 54. As has been explained, the ratchet-device serves as a safety feature, enabling the front end of the boom to be elevated in case the shovel, in its descent, strikes an obstruction,

so that the intermediate frame B will not be lifted from the truck, or other injury caused to the machine The machine described is compact, powerfut, and easily controlled. The machine may be operated where the head-room is low; and the capacity of the machine for shoveling and loading is large.

lt be added that the intermediate frame B, upon Which the power mechanism is mounted, may be lifted from the truclo frame, in which case the bevel gear 19? will be disengaged from the bevel-gear El of the mechanism which actuates the tractionwheels, and the pinion 4-5 will be disengaged from the transverse rack 46 with which the 'iront portion of the truck is equipped; also,

I A. that the conveyer mechanism may be removed from the intermediate frame B the journal bearings being divided to permit su removabii 1ilso,'the raclrs 58 of the raising; and lowering mechanism may be disconnect 15 from the pivots in other words, the intermediate frame upon which the bower mechanism is mounted is demountably carried by the truck; and the conveyer and shovel mechanism are dernountably carried by the intermediate frame Thus the three main parts of the machine may be disconnected from each other which is a feature of much importance in introducing the machine into underground workings.

The two pairs of traction-wheels 27 are disposed under the rear portion and the intermediate portion of the trucln the wheelbase being short, so that the machine will work readily on curves of comparatively short radius. The support which the taction-wheels afford to the truck may be supplemented by the employment of a pair of small wheels 141 mounted on an axle 142 whose central portion is connected by a reach 143, to a pivot or king-bolt 14 i disposed in front of the front set of wheels 27 and carried by the truck-frame. The axle 142 is equipped with a chair or yoke 145, with which is connected a plate or bar 146, whose extremities rest upon the peripheries of the front wheels 141 and support the front portions of the side-members of the truck frame.

The foregoing detailed description has been given for clearness of understanding only and no unnecessary limitation should be understood therefrom. but the appended claims should be construed as broadly as permissible in view of the prior art.

What I claim as new and desire to secure by Letters Patent is:-

l. in a loader. the combination of a poweractuatcd truck within the control of the operator. an intermediate frame surmounting said truck. vertical pivotal connections between the rear portion of said truck and the rear portion of said intermediate frame, power-actuated mechanism within the control of the operator for swinging the front end of said intermediate frame laterally, a conveyer-frame mounted in counterbalanced manner on the rear upper portion of said intermediate frame, and projecting beyond the truck at both ends, power-actuated mechanism serving to swing the conveyer-frame in a Vertical direction, a conveyer associated with said eonveyer-frame, a crank-shaft journaled in the front end of the conve-yerframe, a shovel having its discharge endportion mounted on said crank-shaft, thrustrods connected with an intermediate portion of said shovel and serving to turn the shovel about said crankshaft, a motor mounted on said intermediate frame, and means whereby said motor serves to actuate said crankshaft, said conveyer and said thrust-rods.

2. In a loader, the combination of a poweractuated truck within the control of the operator, an intermediate frame mounted thereon, vertical pivotal connections between the rear portion of the truck and the rear portion of said intermediate frame, power actuated mechanism within the control of the operator for swinging the front end of said intermediate frame laterally, a conveyer-frame overhanging the truck at both ends and having an inclined front portion, horizontal pivotal connections between the rear upper portion of said intermediate frame and an intermediate portion of said conveyer-frame, power-actuated mechanism within the control of the operator for swinging said conveyer-frame in a vertical plane, a conveyer mounted on said conveyerframe,

a rearwardly dumping shovel co-acting with said eonveyer, shovel-actuating mechanism comprising a crank-shaft iournaled in the front end of the conveyer-frame and upon which the discharge end of the shovel is mounted for orbital movement, means for rotating said shaft, and mechanism for imparting thrust to the point end of the shovel and tilting the shovel about its orbita-lly moving axis.

3. Ina loader, the combination of apoweractuated truck within the control of the operator, an intermediate frame surmounting said truck, vertical pivotal connections between the rear portion of said truck and the rear portion of said intermediate frame, mechanism within the control of the operator for swinging the front end of said intermediate frame laterally, a conveyer-frame mounted in counterbalanced manner on the rear upper portion of said intermediate frame, a conveyer associated with said frame, a pair of gear-wheels mounted on the conveyor-frame. means for actuating said conveyor and said gear-wheels, a crankshaft journaled in the front end of said conveyor-frame, a shovel having its discharge end mounted on said crank-shaft, means for communicating motion from said gear wheels to said crank-shaft, and connecting rods between said gear-wheels and the lower portion of said shovel.

4. In a loader, the combination of a poweractuated truck within the control of the operator, an intermediate frame surmounting said truck, vertical pivotal connections between the rear portion of said truck and the rear portion of said intermediate frame, power-actuated mechanism within the control of the operator for swinging the front end of said intermediate frame laterally, a conveyer-frame mounted in counterbalanced manner on the rear upper portion of said intermediate frame, power actuated mechanism within the control of the operator for swinging said conveyer-frame in a vertical plane, a eonveyer associated with said frame, a pair of gear-wheels mounted on the conveyerframe, means for actuating said conveyer and said gear-wheels, a crank-shaft journaled in the front end of said conveyerframe, a shovel having its discharge end mounted on said crank-shaft, connectingrods for imparting motion from said gearwheels to said crank-shaft, and connectingrods between said gear-wheels and the lower portion of said shovel.

5. In a loader, the combination of a truclr,

a laterally swinging frame mounted thereon, a conveyer-frame mounted on said laterally swinging frame and comprising an inclined front section having its front end projecting in front of said truck anda rear section projecting in the rear of said truck, said sections having an articulate joint between them and co-axia-l pivotal connections with said laterally swinging frame, an endless conveyer mounted in the conveyer frame, a shovel and shovel-actuating mechanism mounted on the front end of the conveyerframe, and means foraetuating the conveyer and the shovel-actuating mechanism. 6. In a loader, the combination of a truck, a laterally swinging frame mounted thereon, a eonveyer frame comprising an inclined front section and a rear section, pivotal connections between the adjacent ends of said sections and the rear upper portion of said laterally swinging frame, stops carried by the rear end of the front section and adapted to support the rear section, an endless conveyer mounted in said conveyorframe, shovel mechanism mounted on the front end of the conveyer-frame and c0- acting with said endless conveyer, and means for actuating the conveyer and the shovel mechanism.

7. In a loader, the combination of a truck, alaterally swinging frame mounted thereon, an inclined front'conveyer-frame section, a rear conveyer-frame section, pivotal connections between said sections and the rear upper portion of said laterally swinging frame, shoulders on said sections where by the rear section will tend to counterbalance the front section, shoulders carried by the rear portion of said laterally swinging frame and adapted to support said rear section when the front end of the front section is unduly elevated, an endless con veyer mounted on said conveyor-frame, shovel mechanism mounted on the front end of said conveyer-frame, and means for actuating the conveyor and the shovel mechanism.

S. In a loader, the combination with an endless conveyer of an orbitally moving pivot disposed above the plane of the conveyor and near the. front end thereof, a shovel having connections near its discharge end with the orbitallv moving pivot, and mechanism connected with said shovel toward its point end for imparting thrust to the point of the shovel and tilting the shovel about its orhitally moving axis.

9. In a loader, the combination with an endless conveyer, of an offset horizontal shaft journaled in the extremity of the conveyer-frame, a rearwardly'discharging: shovel comprising a substantially vertical back and a. forwardly turned point,-said shovel having its discharge end orbitally carried by said offset shaft, mechanism for rotating said shaft, and mechanism connected with said shovel between its orbitally moving support and its point and serving to tilt the shovel about its orbitally moving axis.

10. In a loader, the combination with a conveyor, of an orbitally moving pivot near the front end of the conveyer, a shovelmounting journaled on said pivot, a shovel carried by said mounting and capable of limited movement with relation thereto, and mechanism connected with said shovelmounting some distance below the journaled portion of the mounting and serving to impart turning movement of the shovel-mounting with relation to said orbitally moving pivot.

11. In a loader, the combination with an endless conveyor, of an orbitally moving pivot. near the front endthereof, a shovelmounting journaled on said pivot, a shovel movably mounted on said mounting and capable of a limited tilting movement with relation to the mounting, and thrust mechanism connected with said shovel-mounting some distance below the journaled portion of the mounting for imparting turning movement of the shovel-mounting on the orbitally-moving pivot.

12. In a loader, the combination with a conveyer, of an orbitall moving pivot, a shovel-mounting freely suspended thereon, a shovel pivotally connected with said mounting at an intermediate portion of the shovel,

lost-motion connections between the discharge end of the shovel and said shovelmounting, and thrust mechanism connected with said shovelanounting some distance below its point of suspension for imparting turning movement of the shovel-mounting with. relation to said orbitally moving pivot.

13. In a loader, the combination with a convcyer, of a rotating crank-shaftjournaled near the front end of the conveyor and affording an orbitally-nioving pivot, a shovel mounting suspended from said orbitallymoving pivot, thrust rods connected with said shovel-mounting, a shovel tiltaloly connected intermediate its ends with said mounting, and means for-actuating said thrust-rods.

14. In a machine of the character set forth, the combination with a boom, of an. orhitally-moving pivot mounted at the front end thereof, a shovel-mounting suspended from said pivot, a shovel movably mounted on said mounting and capable of limited tilting movement with relation to the mounting, means for imparting thrust through said shovel-mounting to the point portion of the shovel and turning the shovel-mounting on the orhitallyanoving pivot, and means for imparting further turning movement of the shovel about said orbitally-moving pit ot.

15. In a loader, the combination with an endless conveyer, of an orbitally-moving pivot near the front end thereof, a shovelmounting suspended from said pivot, suspension links carried by said mounting, a shovel having an intermediate portion pivotally connected with the lower ends of said links, lost motion connections between the discharge end of the shovel and the upper portion of said mounting, connecting-rods having their front ends pivotally connected with said shovel-mounting and having also connections with said suspension-links capa bio of swinging the links with relation to the mounting, and means for actuating said connecting-rods.

16. In a loader, the combination with an endless conveyor, of an orbitally-moving pivot near the front end thereof, a shovel suspended from said pivot and capable of limited shifting movement With relation to the pivot, and thrust-rods connected with said shovel below said pivot and serving to impart thrust to the point portion of the shovel and to turn the shovel about the orbitally-moving pivot.

17. In a loader, the combination with an endless conveyer, of an orbitailly-moving pivot near the front end thereof, a shovelmounting suspended thereon, suspensiorn links connected with the upper portion of said shovel-mounting, a shovel pivotally connected with the lower portions of said links, means for limiting the movement of the disasgeea charge end of the, shovel with relation to the upper portion of said mounting, connecting rods having pivotal connections with said shovel-mounting, and connecting-links between the lower portions of said suspensionlindlrs and offset portions of said connectingro s.

18. In a loader, the combination with an endless conveyer, of an orbitally-moving pivot near the front end thereof, a shovelmounting suspended from said pivot and having rearwardly-extending arms, a shovel wholly carried by said mounting and having its discharge end disposed near said orbitally-moving pivot and having its point portion projecting below said mounting, and connecting-rods havin their front ends joined to said rearwardIy-extending arms.

19. In a loader, the combination with an endless conveyer, of a shovel at the front end thereof, power-actuated mechanism mounted on the front end of the frame of said conveyer and having means to thrust the shovel forwardly and elevate and tip it rearwardly,

and an oscillating distributing device mounted above the front end of the conveyer, which receives the material from the discharge end of the shovel and distributes it upon the conveyer.

20. In a loader, the combination with an endless conveyer, of a shovel disposed at the front end of the conveyer mechanism, shovelactuating mechanism mounted on the front end of the conveyer-mechanism and having means to thrust the shovel forwardly and then elevate and tilt it rearwardly, and an oscillating distributing device actuated by the shovel-actuating mechanism and disposed above the front end of the conveyer and receiving the discharged materials from the shovel and distributing them upon the conveyer.

21. The combination of a conveyer-frame, an endless conveyer mounted thereon, a reciprocating distributing device disposed over the front end of said endless conveyer and having sliding connection with the conveyerframe, a shovel disposed at the front end of the conveyer, shovel-actuating mechanism mounted on the front end of the conveyerframe, and connections between the shovelactuating mechanism and said reciprocating distributing device.

22. In a loader, the combination of a vertically swinging boom, a power-actuated shovel mounted on said boom, and mechanism for raising and lowering said boom, including safety 'means for automatically permitting relative movement between said frame and the actuating mechanism in the event that the downward movement of the shovel is obstructed in such manner as to elevate or hold said boom.

23. In means of the character set forth, the combination of a shovel, a vertically swinging boom carrying said shovel, a rack through the medium of which said boom is swung in a vertical plane, a platform on which said boom is mounted, a pinion for actuating said rack, and means for applying power to said pinion, including safety means permitting slippage in the event that said shovel encounters such obstruction as to lift or hold the vertically swinging boom.

24:. In a loader, the combination of a power-actuated truck, a laterally swinging intermediate frame, a boom mounted on said intermediate frame, means for swinging said intermediate frame laterally, a power-actuated shovel mounted on said boom, and mechanism for raising and lowering said boom, including a shaft and gear with an interposed ratchet-device arranged to permit slippage in the event that said shovel encounters an obstruction in its descent.

25. The combination with a boom, and means forcontrolling the position of said boom, of an orbitally-moving pivot carried by the front end of said boom, a shovel suspended from and having its discharge end portion connected with said pivot, connecting-rods serving to impart thrust to the point portion of said shovel, and means for reciprocating said connecting-rods.

26. The combination with a boom and means for regulating the position thereof,

of a crank-shaft journaled in the front end of said boom, a pair of gear-wheels journaled at the sides of said boom, means for communicating rotary motion from said gear-Wheels to said crank-shaft, a shovel having its discharge end portion mounted on said crank-shaft, and connecting-rods betwcem said gear-wheels and an intermediate portion of the shovel for imparting thrust to the point portion of the shovel andturm ing the shovel about its /orbitally-moving pivot.

27. The combination of a boom and means for regulating the position of same, of a crank-shaft journaled in the front end of said boom, gear-Wheels disposed inside of .the side-members of the boom and equipped with crank-disks disposed outside of the side-members of the boom, connecting-rods joining the crank-disks. to the crank-shaft, a shovel having its discharge end portion pivotally connected with the crank-shaft, connecting-rods having their rear ends connected with said gear-wheels and having thelr front ends connected with an intermediateportion of the shovel so as to impart thrust to the point portion of the shovel, and means for rotating said gear-wheels.

28. In a machine of the character set forth, the combination with shovel-actuatin mechanism provided with a shovel-pivot, o a shovel-mounting having means for suspending the same from said ivot, a shovel having limited oscillation with relation to 

